Weighing mechanism



. w. GWINN.

`WEIGHING MECHANISM. APPLICATION FILED AuG.23. |919.

1 ,425 1 Patented Aug. 8, 1922.

Gfzyre W Gwinn,

'imma :u e s i www y G. W. GWINN.

'wElGHING MECHANISM. APPLlCATlON FILEDYAUG.23| i919.

1,425,251. Patented ugs, 1922.

Q Q lf @www www? m l G. W. GWINN.

WEIGHING MECHANISM.

APPLICATION FILED Aus.23. 1919.

Patented Aug.. 8, 1922.

4 SHEETS-SHEET 4.

UNITED STATES PATENT oFFlcE.

esoneri vv.` GwiNmoF Einem/1ERE, iviiwfyonx, ASSIGNOR 'ro AUTOMATIC PoxrNe &`

LABELINGCOMPANY, or DURHAM, NoRTHoARoLINA, A conromirrroiv` or Nonmn .CAROL-INA.

WErGI'ING f MECHANISM.

Application fue@ August 23, 1919. serialy No. 319,403.v

To all whomz't maz/concern:

`Be it known that I, GEORGE W. GW1NNa citizen of the United States, residingv at srs Edgemere,in thek county of Queens and State of New York, have invented certain new and useful Improvements in Weighing Mechanism, of which thefollowing is a specification. l

`Thisinventionv pertains `to an improved weighing mechanism which isV adapted more particularly `for use in r conjunction with packaging apparatus, l

In packaging certain materials it is essen#y tial that the charge entering eachfcon'tainerL be weighed, and with certain classes of materia'ls, owing to their nature, the packaging mechanism may be operated atafspeed in eXcess `of that at 'which the ordinary weigh-l ing mechanism may be operated. It is essen-f1 tia1,therefore, to provide especial weighing `mechanism, which will feed successive charges to the'l packaging mechanism while thev latter is operated at its normal speed and toaccurately weigh each `of, said charges. Accuracyis essential, particularly so where the material, such as tobacco, is put out under a revenue stamp. l

. One embodiment of the invention is dis closed in the annexed drawngs,wherein:

Fig. 1 is a sectional elevation of the mech'-4 Fig. 2 an'end `elevat1on thereof;V l scale showing two of the scale pans yavndtheir operative mechanism.

` Fig. et a transverse vertical sectional "view of the scale Fig. 5 a detail sectional view dumping mechanism; e

`Fig. ,6 a similar view on the linefVI-YI of Fig. 5; and 'f "l f Figs. 7 `to lcdiagrammatic'views showing of the carriers `or` the successive charging receptacles by the scales;

In the drawings Ihaveiillustrated two supporting lframes 1 and 2,1 each; of which is provided with twoluprig'hts `or standards 3 -and "4 carrying outwardly extending brackets 5.l Each pair of brackets form the support for a pair of rails or bars 6,7,1which' in turnform the support forrthe weighing mechanismf There are two series or'groups ofscales, the `pans of one seriesibelngdenoted by 8, 9 and 10 and those of the second set or series by 11, v12 and 13, respectively. A suitable feed device will be provided for each pan and' in the present instance 4is illus-`l` trated as a tube 14 `.though `any suitable means may be employed, the present showing being merely diagrammatic, as such feature forms no part of the present invention.v

Located beneath the first series or group .of scales is a wide mouth funnel 15 and a similar funnel 1611s located beneath the second group or series.` Said vfunnels dis-` charge into a series of receptacles `17 `of any approved shape, the `receptacles being 'at tachedto cross bars 18 which in turn are connected to two' endless chains 19 which passabout'sprockets 2() and 21-and thus `form an endless carrier having a series `of independent receptacles. Motion is imparted tothe carrier through gearing 22," (Fig: 2) driven fby'f a sprocket chain 23 which derives power from a suitable source. motion lis continuous and the receptacles 117 pass uninterruptedlybeneath the funnels 15 and 16 and discharge into a funnel or hopper 24 (Fig. 1) which directs the material to the packaging mechanism. It is desirable that the'fscales of each series operate to discharge their contents successively andA thatthe'scaies of yone series or set operatey in alternation with those'of the other series or set. The weighingmechanism `may be of anyapproved type and each scale is alike l' in form in so far as its operating mechanism 1s concerned, hence a descrlptlon of one will Flg. 3 a sectional elevatlon on an enlarged suffice for all. The scale pans, which, Aas

above indicated, are numbered 8to`13 in-y end of which' is bifurcated andv is securedl to a shaft26, said shaft being supported by and extending through the lower ends of two varms 27 and 28.l Said. arms at, their res The"

upper ends are provided with knife edge' bearing elements 29vwhich areseated in the outer ends of the arms 3() of the scale beam. Said beam is in` turn providedwith knife edge'bearing'members 31 whichrest upcii fixed posts or supporting members 32 exe` tending upwardly from the rails 6v and 7. An adjustable weight 33 is mounted upon the rearwardlyr extending element 34 of the scale beam and will, of course, beset according to the weight which yit is desired the pan should receive. `Extending downwardly from the 4rails 7 (see Figs. 4: and 5) is a bracket 35, in the lower end of which there is secured a stub shaft 36 which forms y110 the support for a combined sprocket wheel 87y and a slotted actuator for the scale, the slot being denoted by 38. Secured to the end of the shaft 26 adjacent said actuator is a crank arm 89 carrying a roller 40, which roller stands in alinement with the slot 38 and` is of a size such that it passes freely thereinto and makes con-tact with; the walls of the slot. A sprocket chain 41 passes over the sprocket wheel 87 and at one endy has connected thereto a spring 42, the spring tending to rotate the sprocket clockwise and to bring the actuator to the position shown in Figs. 5 and 6. 'The opposite end of the sprocket chain is connected to the outer end of a lever 43, the lever in turn being sleeved upon a rod 44. between the frame elements 8 and 4. A shaft 45 is likewise mounted between the members 3 and 4, said shaft having secured thereto a sprocket wheel 46 about whichl passes a sprocket chain 47 which is constantly driven from a suitable source of power, not shown, and in timed relation to the sprocket chain. 23 which actuates the endless carrier for the receptacles 17. Said shaft has secured to it a series of: cams 48 (see more particularly Figs. 3 and 4) there being one of such cams for each of the scale mechanisms. Said cam is designed to contact a bowl or roller 49 mounted upon the lever 43 so that for. each revolution of the shaft 45 the under-lying lever 43 will be depressed and the scale pan dumped. There will be an actuating cani, as 48, for each of the scale mechanisms and said cams are spaced.y about the shaft so that the scales will be dumped one at a time, the scales in. one series being dumped successively and the scales of the different series being dumped in alternation.

In operation, as the scale pan lills and descends under the weight of the material, the shaft 2G will be lowered and the roller 40 will pass from the upper part of the slot 88 in the actuating member from the position shownin full lines inF ig. 5 to the ppsition shown in dotted lines in said figure. he scale having received its weight, the cam` 48 contacts the roll 49 and depresses the lever 43 thereby drawing down upon the sprocket chain 41, rotating sprocket 37 and` stressing spring 42. This movement, oik course, dumps the scale pan. As the cam 48 rides off the roll 49 spring 42, through its contraction, rotates the sprocket 37 in the opposite direction and again brings the scale. to its horizontal position beneath the feeding element 14. will preferably be connected to the lower end of the arm 27 in order to maintain the scale mechanismV in its proper position and relation.

Referring now to Fig. 1 theV parts are shown in that position where the scale pan A radius bar 50 8 of the first series has received its proper weight of material and has been discharged so that the charge of material passes therefrom through the funnel 15 and. into the then underlying receptacle 17. The next operation discharges the first scale pan of the second series or group, namely, 11, and the parts are then in the position shown in Fig. 7. The endless conveyor for the receptacles, which is constantly moving, advances the receptacles to the position shown in Fig. 8, and, as will be seen, the receptacle which was previously filled by the pan 8 will have been moved forward two steps so that when the pan 9 has discharged, as indicated in said Fig. 8, it will leave an empty receptacle between the one it fills and the one which was previously filled by the pan 8. This same operation obtains with the scales of the second series or group, as is indicated in Fig. 9, and this operation is continued, as will beseen upon reference to the remaining figures, until all of the scale pans advancing from the last funnel 16 to the point of discharge are filled. Thus it will be seen that the receptacles are filled in alternation by the scales of one group and that thev scales of each group or series operate in alternation with those oi the other.

It will, of course, be understood that as the pan 12 operates with the receptacles filled, as in Fig. 14, the empty receptacle adjacent the funnel 16, in said figure will have been advanced beneath such funnel to receive the charge from the pan 12 and thus the series of receptacles as they pass from such funnel will be loaded and continue to deliver weighed charges to the hopper 24 which` leads to the packaging mechanism. By reason of the fact that the receptacles 17 are open-mouthed or have 'one end removed, they will automatically discharge themselvesinto the hopper 24l as they are turned downwardly as the sprocket chains pass about the sprocket wheel adjacent said hopper.

Vhat is claimed isr- 1. In an apparatus for transporting and delivering weighed charges of material, the combination of a plurality of sets of scale pans; a funnel located below each set; a series of receptacles; means for continuously passing said receptacles beneath said funnels; and means for feeding. materialto said pans and effecting a. dumping of the pans of each series successively, the pans of; one series operating in alternation with those of the other.

2. In an apparatus for transporting and delivering charges ofmaterial, the combination of a plurality of' scale pans; a funnel located beneath said pans and into which the material is discharged; a series of receptacles located in line with the funnel and adapted to receive the charges therefrom;

neath said tunnels; and means for alter- I nately dumping material from said scale pans intoand through the tunnels and into alternate receptacles, as the same are passed beneath the tunnels.

4. In an apparatus tor transporting and delivering weighed charges of material, the combination ot a plurality of sets of scale pans; a tunnel located beneath each set of pans; a series of movable receptacles l0- cated in line with thefunnels; means for moving said receptacles beneath said funnels; means tor alternately dumping material from said scale pans into the tunnels and consequently into alternate receptacles as the sameare passed beneath the tunnels; and means for successively discharging said movable receptacles at a single point or terminal. y

5. In an apparatus for transporting and delivering weighed charges ot material, the combination of a plurality ot scale ans; a plurality ot tunnels; a plurality o recep tacles; means tor moving said receptacles beneath said tunnels; and means tor alternately dumping said pans and discharging the material therefrom into the tunnels and through the same into the receptacles, said tunnels being so arranged to direct one charge only into each of said receptacles.

6. In an apparatus for transporting and delivering weighed charges ot material, the

combination of two sets of scale pans; a tunnel located under each set and adapted to receive the material discharged from the pans; a series of traveling receptacles passing beneath said tunnels; and means tor successively operating the scale pans of each series and the pans ot one series in alternationvwith those of the other.

7. In an apparatus tor transporting and delivering weighed charges of material, the i combination ot a pair of tunnels; a series of travelin receptacles passingbeneath said tunnels and adapted to receivey the material therefrom; a seriesy of scale pans located above each tunnel; means for charging each of said pans; and means tor serially vdumping the pans, a pan in one series operating in alternation with the corresponding pan in the other series whereby but one scale will be discharged at ay time and the funnel tor each series of scale `pans will deliver material into alternate` receptacles as they pass beneath such tunnels.

8. In an apparatus tor transporting and delivering weighed charges ot material, the

combination ot yan endless carrier; `a series oty receptacles attaclied'thereto and movable therewith; a pair ot tunnels; and weighing mechanism tor the material tree of any operative connection with the receptacles adapted to ldischarge into each of said tunnels and to deliver the material alternately from each funnel into alternate receptacles, the receptacles filled by one funnel being in alternation with those of the other.

In'testimony whereof I have signed my name to this specification.

GEORGE W. GWINN. 

